Mount adapter bracket



FIG. 1 is a perspective view of a mount adapter bracket showing my newdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof, the right side view being a mirrorimage thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The broken lines in FIGS. 1-6 illustrate portions of the mount adapterbracket that form no part of the claimed design.

CLAIM The ornamental design for a mount adapter bracket, as shown and described. 